Secondary explosion display shell

Abstract

A secondary explosion display shell relates to the technical field of display shells and comprises a lower shell body, a sleeve, an upper shell body and a quick firing line, the sleeve is arranged above the lower shell body, the upper shell body is arranged at the upper end of the sleeve, the quick firing line and the lower shell body are arranged on the lower shell body, the sleeve and the upper shell body are coaxially arranged, and a first delay lead and a second delay lead are arranged on the lower shell body. The first delay lead is arranged in the lower bomb body, the lower end of the second delay lead is arranged in the lower bomb body, the upper end of the second delay lead is arranged in the upper bomb body, and the lower end of the upper bomb body is arranged in the sleeve; according to the display shell, the lower shell body and the upper shell body are arranged in a matched mode, after the lower shell body explodes, the upper shell body lifts off secondarily to explode, and the set-off effect of the display shell is improved; flying wings are distributed on the side face of the two-section launching shell, so that the flying track of the upper projectile body is controlled, and the expected setting-off design is conveniently achieved.

Description

A type of double-explosive fireworks shell Technical Field

[0001] This utility model relates to the field of fireworks technology, and in particular to a secondary detonation fireworks shell. Background Technology

[0002] Fireworks shells, due to their high launch altitude and powerful explosion, provide dazzling visual effects and effectively enhance the festive atmosphere, thus they are widely used in festivals, opening ceremonies, or daily celebrations.

[0003] Traditional fireworks shells typically explode only once in the air, releasing pre-set bright beads and effect powder to form specific patterns. While the effect is good, the long duration of the fireworks display and the monotonous explosion can bore the audience. To enhance the explosion effect and improve the viewing experience, we propose a two-stage explosion fireworks shell. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, this utility model discloses a secondary detonation firework shell. This utility model improves the ignition effect of the firework shell by setting a sleeve and a fast-acting fuse on the lower shell body and setting an upper shell body on the sleeve.

[0005] To achieve the aforementioned objective, this utility model adopts the following technical solution:

[0006] A secondary detonation fireworks shell includes a lower shell, a sleeve, an upper shell, and a rapid-fire fuse. The sleeve is located above the lower shell, and the upper shell is located at the upper end of the sleeve. The rapid-fire fuse is located on the lower shell. The lower shell, sleeve, and upper shell are coaxially arranged. The lower shell has a first delay fuse and a second delay fuse. The first delay fuse is located inside the lower shell, the lower end of the second delay fuse is located inside the lower shell, and the upper end of the second delay fuse is located inside the upper shell. The lower end of the upper shell is located inside the sleeve.

[0007] The lower projectile body includes a lower shell, propellant, sealing plates, flash bombs, and detonator. The upper end of the lower shell is provided with a sleeve, and the propellant is provided inside the lower shell. The lower end of the rapid detonation line passes through the lower shell and is placed inside the propellant. Two parallel sealing plates are provided above the propellant. The sides of the sealing plates are connected to the inner wall of the lower shell. Detonator is provided between the two sealing plates, and flash bombs are distributed on the outside of the detonator.

[0008] The first delay lead is disposed in the propellant, with its upper end passing through the lower sealing plate and disposed in the detonating charge. The lower end of the second delay lead passes through the upper sealing plate and is disposed in the detonating charge, with its upper end passing through the upper end of the lower casing.

[0009] The upper projectile body includes a two-stage launch casing, an upper casing, an inner casing, propellant, a flash bomb, and an initiating charge. The upper end of the two-stage launch casing is provided with a spherical upper casing, and concentric inner casings are distributed inside the upper casing. The two-stage launch casing is filled with propellant. The innermost inner casing inside the upper casing is filled with initiating charge. The gap between two adjacent inner casings is filled with a mixture of initiating charge and flash bomb. The inner wall between the outermost inner casing and the upper casing is filled with a mixture of initiating charge and flash bomb. The upper end of the second delay lead passes through the two-stage launch casing, the upper casing, and the inner casing and is located in the initiating charge of the innermost inner casing.

[0010] The upper shell side is connected to the upper end of the sleeve, and a fixing ring is provided at the upper end of the upper shell, through which the upper end of the quick-ignition line passes.

[0011] The two-section launch casing is housed inside the sleeve, and flying wings are distributed on the sides of the two-section launch casing.

[0012] The present invention relates to a secondary detonation firework shell, which is highly practical and very convenient to use. By coordinating the lower and upper shells, the upper shell detonates a second time after the lower shell explodes, thus improving the firework shell's ignition effect. By distributing flying wings on the sides of the two-section launch casing, the flight trajectory of the upper shell can be controlled, making it easier to achieve the intended ignition design. Attached Figure Description

[0013] Figure 1 is a three-dimensional structural diagram of this utility model;

[0014] Figure 2 is an enlarged view of section A of this utility model;

[0015] Figure 3 is a cross-sectional view of the lower projectile of this utility model;

[0016] Figure 4 is a cross-sectional view of the upper projectile of this utility model;

[0017] In the diagram: 1. Lower projectile body; 2. Sleeve; 3. Upper projectile body; 4. Quick-fire fuse; 5. Retaining ring; 6. Lower casing; 7. Propellant; 8. Sealing plate; 9. Flash bomb; 10. Detonator; 11. First delay fuse; 12. Second delay fuse; 13. Two-stage launch casing; 14. Upper casing; 15. Flying wing; 16. Inner casing. Detailed Implementation

[0018] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0019] Referring to Figures 1-4, a type of secondary detonation fireworks shell includes a lower shell 1, a sleeve 2, an upper shell 3, and a rapid detonation wire 4. The sleeve 2 is located above the lower shell 1, and the upper shell 3 is located at the upper end of the sleeve 2. The rapid detonation wire 4 is located on the lower shell 1. The lower shell 1, sleeve 2, and upper shell 3 are coaxially arranged. The lower shell 1 is provided with a first delay wire 11 and a second delay wire 12. The first delay wire 11 is located inside the lower shell 1, the lower end of the second delay wire 12 is located inside the lower shell 1, the upper end of the second delay wire 12 is located inside the upper shell 3, and the lower end of the upper shell 3 is located inside the sleeve 2.

[0020] The lower shell 1 includes a lower casing 6, propellant 7, sealing plate 8, flash bomb 9, and detonator 10. The upper end of the lower casing 6 is provided with a sleeve 2, and the propellant 7 is provided inside the lower casing 6. The lower end of the quick-ignition wire 4 passes through the lower casing 6 and is placed inside the propellant 7. The quick-ignition wire 4 ignites the propellant 7. The combustion of the propellant 7 causes the gas to expand rapidly, pushing the fireworks shell out of the launch tube and into the air. Two parallel sealing plates 8 are provided above the propellant 7. The sides of the sealing plates 8 are connected to the inner wall of the lower casing 6. The detonator 10 is provided between the two sealing plates 8. Flash bomb 9 are distributed on the outside of the detonator 10. After the detonator 10 scatters the flash bomb 9 to the surroundings, the flash bomb 9 burns and emits light, completing the first stage explosion effect of the fireworks shell.

[0021] The first delay lead 11 is disposed in the propellant 7. The upper end of the first delay lead 11 passes through the lower sealing plate 8 and is disposed in the detonator 10. The combustion of the propellant 7 ignites the first delay lead 11. The lower end of the second delay lead 12 passes through the upper sealing plate 8 and is disposed in the detonator 10. The upper end of the second delay lead 12 passes through the upper end of the lower housing 6. The upper end of the first delay lead 11 ignites the detonator 10 between the sealing plates 8 and the lower end of the second delay lead 12.

[0022] The upper projectile 3 includes a two-stage launch casing 13, an upper casing 14, an inner casing 16, a propellant 7, a flash bomb 9, and an initiating charge 10. The upper end of the two-stage launch casing 13 has a spherical upper casing 14. Concentrically arranged inner casings 16 are distributed within the upper casing 14. The two-stage launch casing 13 is filled with the propellant 7. The innermost inner casing 14 within the upper casing 16 is filled with the initiating charge 10. The gaps between adjacent inner casings 16 are filled with a mixture of the initiating charge 10 and the flash bomb 9. The space between the outermost inner casing 16 and the inner wall of the upper casing 14 is filled with a mixture of the initiating charge 10 and the flash bomb 9. The second delay fuse 12 passes through the two-stage launch casing 13, the upper casing 14, and the inner casing 16 and is placed in the detonator 10 of the innermost inner casing 16. The second delay fuse 12 ignites the propellant 7 in the two-stage launch casing 13. The combustion of the propellant 7 in the two-stage launch casing 13 causes the gas to expand rapidly, pushing the upper projectile 3 out of the sleeve 2 and into the air for a second time. The second delay fuse 12 continues to burn and ignite the detonator 10 in the inner casing 16. The explosion of the detonator 10 scatters the flash bomb 9 in the upper casing 14 to the surrounding area, completing the second stage explosion effect of the fireworks shell.

[0023] The upper housing 14 is connected to the upper end of the sleeve 2 on the side. The upper end of the upper housing 14 is provided with a fixing ring 5, and the upper end of the quick-ignition wire 4 passes through the fixing ring 5.

[0024] The two-section launch casing 13 is installed inside the sleeve 2. The two-section launch casing 13 has flying wings 15 distributed on its side, and the flying wings 15 control the flight direction of the upper projectile 3.

[0025] The embodiment describes a secondary detonation fireworks shell. In use, the fireworks shell is placed inside the launch tube. The quick-ignition wire 4 is disconnected and ignited. The retaining ring 5 holds the quick-ignition wire 4 in place. The quick-ignition wire 4 ignites the propellant 7. The combustion of the propellant 7 causes rapid gas expansion, propelling the fireworks shell out of the launch tube and into the air. The combustion of the propellant 7 ignites the first delay fuse 11. The upper end of the first delay fuse 11 ignites the initiating explosive 10 between the sealing plates 8 and the lower end of the second delay fuse 12. The initiating explosive 10 between the sealing plates 8 scatters the flash bomb 9 in all directions. The flash bomb 9 burns and emits light, completing the first stage explosion effect of the fireworks. The second delay fuse 12 burns upwards, igniting the propellant 7 in the second-stage launch casing 13. The burning of the propellant 7 in the second-stage launch casing 13 causes the gas to expand rapidly, pushing the upper projectile 3 out of the sleeve 2 and into the air a second time. The flying wing 15 controls the flight direction of the upper projectile 3. The second delay fuse 12 continues to burn, igniting the detonator 10 in the inner casing 16. The explosion of the detonator 10 scatters the flash bomb 9 in the upper casing 14 to the surrounding area, completing the second stage explosion effect of the fireworks.

[0026] The parts of this utility model not described in detail are prior art. Although this utility model has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. However, those skilled in the art should understand that various changes in form and detail can be made to this utility model without departing from the spirit and scope of this utility model as defined by the appended claims, and all such changes shall be within the protection scope of this utility model.

Claims

1. A secondary detonation fireworks shell, comprising a lower shell (1), a sleeve (2), an upper shell (3), and a rapid detonation wire (4), wherein the sleeve (2) is provided above the lower shell (1), the upper shell (3) is provided at the upper end of the sleeve (2), and the rapid detonation wire (4) is provided on the lower shell (1), and the lower shell (1), the sleeve (2), and the upper shell (3) are coaxially arranged, characterized in that: The lower projectile (1) is provided with a first delay lead (11) and a second delay lead (12). The first delay lead (11) is located inside the lower projectile (1), the lower end of the second delay lead (12) is located inside the lower projectile (1), the upper end of the second delay lead (12) is located inside the upper projectile (3), and the lower end of the upper projectile (3) is located inside the sleeve (2).

2. The second-firing salute projectile of claim 1, wherein: The lower projectile (1) includes a lower shell (6), a propellant (7), a sealing plate (8), a flash bomb (9), and an initiating explosive (10). The upper end of the lower shell (6) is provided with a sleeve (2), and the lower shell (6) is provided with a propellant (7). The lower end of the quick-ignition wire (4) passes through the lower shell (6) and is located inside the propellant (7). Two parallel sealing plates (8) are provided above the propellant (7). The side of the sealing plate (8) is connected to the inner wall of the lower shell (6). The initiating explosive (10) is provided between the two sealing plates (8), and flash bombs (9) are distributed on the outside of the initiating explosive (10).

3. The second-firing salute projectile of claim 1, wherein: The first delay lead (11) is placed in the propellant (7). The upper end of the first delay lead (11) passes through the lower sealing plate (8) and is placed in the detonator (10). The lower end of the second delay lead (12) passes through the upper sealing plate (8) and is placed in the detonator (10). The upper end of the second delay lead (12) passes through the upper end of the lower shell (6).

4. The second-firing salute projectile of claim 1, wherein: The upper projectile (3) includes a two-section launch casing (13), an upper casing (14), an inner casing (16), a propellant (7), a flash bomb (9), and an initiating charge (10). The upper end of the two-section launch casing (13) is provided with a spherical upper casing (14). The inner casings (16) are concentrically arranged inside the upper casing (14). The two-section launch casing (13) is filled with propellant (7). The innermost inner casing (16) inside the upper casing (14) is filled with propellant (7). The detonator (10) is filled with a mixture of detonator (10) and flashball (9) in the gap between two adjacent inner shells (16). The inner wall between the outermost inner shell (16) and the upper shell (14) is filled with a mixture of detonator (10) and flashball (9). The upper end of the second delay lead (12) passes through the two launch shells (13), the upper shell (14) and the inner shell (16) and is set in the detonator (10) of the innermost inner shell (16).

5. The second-firing salute projectile of claim 4, wherein: The upper shell (14) is connected to the upper end of the sleeve (2) on the side. The upper end of the upper shell (14) is provided with a fixing ring (5), and the upper end of the quick-ignition wire (4) passes through the fixing ring (5).

6. The second-firing salute projectile of claim 4, wherein: The two-section launch casing (13) is set inside the sleeve (2), and the two-section launch casing (13) has flying wings (15) distributed on its side.

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